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وارد شوید

WAEC - Mathematics (1996 - No. 38)

In the diagram above, AB, CD and XY are straight lines intersecting at W. Find ∠CWX
20o
80o
100o
120o
140o

توضیح

a = 40o (vertical opp. ∠s are equal) b = 60o
a + b + c = 180o (sum of ∠s on a str line)
40o + 60o + c = 180o
C = 180o - 100o
C = 80o

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